Perhaps you should try some spelling variations:
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search)
"coder coder dft based program" » "coder decoder dft based program" (Expand search), "code code dft based program" (Expand search), "decoder codec dft based program" (Expand search), "coder code df based program" (Expand search), "coder coder art based program" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder dft based program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder dft based program\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder dft based program ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder dft based program") OR ("api python python python programming"))*.